/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package opennlp.tools.cmdline.postag;
import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;
import opennlp.tools.cmdline.ArgumentParser;
import opennlp.tools.cmdline.CLI;
import opennlp.tools.cmdline.CmdLineTool;
import opennlp.tools.cmdline.CmdLineUtil;
import opennlp.tools.cmdline.TerminateToolException;
import opennlp.tools.cmdline.params.EvaluatorParams;
import opennlp.tools.postag.POSEvaluator;
import opennlp.tools.postag.POSModel;
import opennlp.tools.postag.POSSample;
import opennlp.tools.postag.POSTaggerEvaluationMonitor;
import opennlp.tools.util.ObjectStream;
public final class POSTaggerEvaluatorTool implements CmdLineTool {
public String getName() {
return "POSTaggerEvaluator";
}
public String getShortDescription() {
return "";
}
public String getHelp() {
return "Usage: " + CLI.CMD + " " + getName() + " "
+ ArgumentParser.createUsage(EvaluatorParams.class);
}
public void run(String[] args) {
if (!ArgumentParser
.validateArguments(args, EvaluatorParams.class)) {
System.err.println(getHelp());
throw new TerminateToolException(1);
}
EvaluatorParams params = ArgumentParser.parse(args,
EvaluatorParams.class);
File testData = params.getData();
CmdLineUtil.checkInputFile("Test data", testData);
Charset encoding = params.getEncoding();
POSModel model = new POSModelLoader().load(params.getModel());
POSTaggerEvaluationMonitor missclassifiedListener = null;
if (params.getMisclassified()) {
missclassifiedListener = new POSEvaluationErrorListener();
}
POSEvaluator evaluator = new POSEvaluator(
new opennlp.tools.postag.POSTaggerME(model), missclassifiedListener);
System.out.print("Evaluating ... ");
ObjectStream<POSSample> sampleStream =
POSTaggerTrainerTool.openSampleData("Test", testData, encoding);
try {
evaluator.evaluate(sampleStream);
}
catch (IOException e) {
System.err.println("failed");
System.err.println("Reading test data error " + e.getMessage());
throw new TerminateToolException(-1);
} finally {
try {
sampleStream.close();
} catch (IOException e) {
// sorry that this can fail
}
}
System.out.println("done");
System.out.println();
System.out.println("Accuracy: " + evaluator.getWordAccuracy());
}
}